Bottle-cap retainer and method of making the same



July 29, 1930. c. A. M coRDY 1,771,644

BOTTLE CAP RETAINER AND METHOD OF MAKING THE SAME Filed Jan. 16, 1928 TTU FPNEYE' Patented July 29, 1930 cmmnns a masonry, or SYRACUSE, NEW Yonx BOTTLE-CAP RETAINER AND METHOD OF MAKTNG THE Application filed January 16, 1928. Serial No. 247,097.

This invention relates to a bottle cap retainer and method of making the same'and refers more particularly to bottle caps which are drawn across and upon the mouth of the I bottle and provided with a skirt or extension adapted to wrapor fold around the neck of the ottle. r i a The main object is to seal the cap'upon the bottle or other container by means of a ring cast or molded in one operation and capable of being easily broken when it is desired to break the sealor removing the cap. and which will be easily detectible if broken. Another object is to provide a simple and convenient sectional mold which may, be temporarily clamped around the skirt and neck of the bottle for receiving the molten metalgfrom which the cap-retaining ring is formed and to enable said mold to be easily and quickly detached from the bottle immediately following the casting of the retaining rm I A nother object is to provide the ring with an integraltab or finger-piece by which the ring may be broken to release the cap and permit the same to be removed from the bottle whendesired.

-Other objects and uses relating to the invention will be brought out in the following description.

In the drawings z-- Figure l is a perspective view of a bottle with the cap held thereon by my improved retaining ring. j Figure 2 is anenlarged transverse sectional view through the neck ofthe bottle and skirt of the cap showing the mold'in operative position for casting the ring around said b skirt and neck of the bottle, the dotted lines indicating one of moved to its open position.

Figure 3 is a sectional view of the locking device for the clam 'ng sections taken in the plane of line 33, Figure 2.

Figure 4 is a detail sectionalview taken in the plane of line 4'4,'Figure 2.

Figure 5 is a detail sectional view taken in the plane of line 5-5, Figure 2, showing a portion of the cap and one side of the mold for forming the cap-retaining ring.

'neck of the bottle annular flanges -6- having tapered semithe clampmg sections 1 clamping sections The bottle or other receptacle A- may be of any conventional form, size or material having the usual enlarged mouth -aand neck a'-- across and around which the cap -'-B- is placed, the cap being provided with a skirt b, adapted to :told or fit around the neck of the bottle.

A cap-retaining ring-1' is cast from molten metal around the skirt and neck ofthe bottle to tightly impinge the skirt against said neck for holding the cap in operative position and is formed with a radially projecting finger-piece or tab 2' during the process of molding,

As illustrated, the apparatus for casting on the ring -1 around the skirt of the cap and comprises a pair of substantially semi-circular clamping members 3 and :-3- arranged end toend to form a substantially continuous circular mold having their inner .faces provided with semiannular channels or chambers -4- and 4 which, when the sections are brought together end to end, register with eadh other and form a substantially continuous chambar in which the ring -1-- is cast. I

The inner diameter of the mold as a whole above and below the chambers et and 4- is approximately equal to the external diameter of the neck -a-- of the bottle allowing a slight clearance for the reception of the skirt'bof the cap -B The meeting ends of the mold sections -3 and 3 at one side are hinged to- 'gether at ;,5-- to permit said sections: to open and close upon the skirt of the cap and neck of the bottle, the opposite meeting edges eing provided with outwardly flaring semiannular recesses 7 which, when the are closed upon the skirt of the cap and neck of the bottle forming a tapered socket for receiving a similarly tapered end of a nozzle -8'. a

This nozzle 8 is provided with a central relatively small passage -9- axially therethrough for receiving the molten metal and discharging the same into cavities or chambers 4- and -4- during the operation of molding the ring -1-, said nozzzle 10o being movable into and out of-socket 7 as may be required for projecting the molten metal under pressure into said mold.

The ends of the mold sections 3' and -3- adjacent the sockets -7 are provided with relatively thin and narrow recesses l0 projecting radially and outwardly from the adjacent ends of the chambers 4L and -4- to form extensions thereof and in which the tab 2 is molded as an integral part of the ring.

A locking lever 11 is pivoted at -12 to one end of one of the sections as -4=-'to swing into and out of engagement with the adjacent portions of both of the sections, preferably at the'junction of the flanges -6- with the sections 3 and --3-.

The lever -11 is provided intermediate its ends with a substantially semi-circular recess 12, the opposite walls of which are tapered or floored outwardly to wedge against the adjacent port-ions of the clamping members 3 and -4 for tightening said members upon the skirt of the cap B and around the neck of the bottle and for holding the clamping members in their operative positions during the molding of the ring 1.

The cap -B including its skirt is preferably formed of a single piece or sheet of flexible moisture-proof material such as paper and it, therefore, follows that when it is placed upon the mouth of the bottle and around the neck thereof its skirt will be more or less crimped or folded and in practise it is found to .be expedient to crease and score the skirt radially in uniformly spaced relation circumferentially to facilitate its crimping or folding around and close to the periphery of the neck of the bottle and also to form a more or less uniform surface for the reception of the ring -1, and in order that the mold sections -3 and 3' may fit closely upon the more or less corrugated periphery of the skirt of the cap the inner peripheries of the mold sections above and below the chambers 4 and 4- are notched or corrugated to conform to the corrugated contour of the skirt.

This construction assures a close engagement of the inner faces of the mold sections with the periphery of the skirt and also assures a close impingement of the skirt against the neck of the bottle to avoid leakage of the molten metal from the chambers 4 and 4' during the casting of the ring -1.

Operation of the bottle and to bring the chambers -4 and -4 into continuity around said skirt,

the sections being then looked in place by the i adjustment of the hand lever 11 to the position shown by full lines in Figures 2 and 3.

The nozzle '8- is then forced into the socket 7 following which the molten metal is projected under pressure through the passage 9 and into the chambers -4- and 4: to form a complete ring 1 around and against the periphery of the skirt of the cap B- and also to impinge the skirt of the cap against the periphery of the neck of the bottle, thereby holding the cap in operative position on the bottle.

This casting operation is practically instantaneous and is immediately followed by the removal of the nozzle 8- from the 9 and finger piece -2 by reason of they fact that this connection is relatively small and, therefore, easily broken, particularly before the metal has had time tothoroughly cool.

It is evident, however, that owing to the short time required for casting the ring the mold sections -3 and 3' do not have time to absorb the heat from the molten metal and for that reason effects a quick chilling of the newly cast ring aided by the fact that the ring is of relatively small cross section.

This quick cooling of the newly cast rlng also prevents charring or other injury by heat of the skirt of the cap.

What I claim is 1. The herein described method of seallng bottles and analagous containers consisting in drawing a flexible material over the mouth and around the neck of the bottle and then casting a ring of fragile metal around the skirt of the cap and adjacent portion of the neck of the bottle.

2. The herein described method of sealing bottles consisting in placing a cap over the mouth of the bottle and around the neck thereof, and casting a fragile metal ring around the skirt of the cap with suflicient firrrlliness to hold said skirt against the bottle nec 3. The herein described method of sealing bottles consisting in placing a cap over the mouth of the bottle and around the neck thereof, and casting a fragile metal ring around the skirt of the cap with sufiicient firmness to hold said skirt against the bottle neck, and simultaneously molding a finger piece upon the ring adapted to be operated to brake the ring.

In witness whereof I have hereunto set my hand this 12th day of January, 1928.

CHARLES A. MAOOORDY. 

